03 Spot and Patch tool
You’ll find the Spot and Patch tool near the bottom of the Add Adjustment menu. If you find yourself using it a lot, it might be worth adding it to the list of default editing tools.
04 Set the Radius
The Spot and Patch tool always produces a circular repair, and you can’t ‘paint’ with it, so you need to adjust the radius of the tool so that it’s slightly larger than the object you want to remove.
05 Click the Patch box
By default, Aperture will try to remove the object automatically using surrounding pixels, but this isn’t always successful. The larger the spot, the more blurry and unsatisfactory the result tends to be.
Instead, click the ‘Patch’ box over in the tools panel. Now you get two circles not one. The yellow circle is the area you’re repairing, and the identically-sized white circle is the source. You can drag the source to any nearby area to find the best clone source for the repair.
And that’s not all. Regular Retouch operations either work or they don’t – you can’t tune them afterwards. But the Spot and Patch tool is different, because now, once you’ve applied the Patch you can continue to experiment with the size and position of the repair and the clone source, and you can continue to modify the Patch properties, such as Softness (feathering), Opacity and more.